Hi guys, i am moving to a new address that's served by optimum online. For TV, i want to get the cheapest package (just basic channels + their HD counterparts).
The prime mover for flexion of the shoulder muscles used are the following: 1  Pectoralis Major Clavicle. 2  Anterior Deltoid. 3  Biceps Brachii Short Head. 4  Coracobrachialis.
What muscle adducts shoulder and causes extension of the shoulder joint? The latissimus dorsi, and the trees major, which is known as the  little lat, both adduct, extend, and internally(medially) rotate the shoulder.